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Mass Transfer

Mass Transfer
When the temperature and humidity of air is low, we usually use __________ draft cooling tower.

None of these
Induced
Forced
Natural

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Mass Transfer
Moisture in a substance exerting an equilibrium vapour pressure less than that of pure liquid at the same temperature is called the __________ moisture.

None of these
Unbound
Bound
Critical

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Mass Transfer
Desulphurisation of petrol is done in a

Packed extraction column
Bollman extractor
Plate type extraction column
Rotating disc extractor

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Mass Transfer
If mass diffusivity in a mixture is equal to the thermal diffusivity, then the Lewis number is

1
< 1
> 1

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Mass Transfer
Which of the following adsorbant is used in the refinning of sugar?

Activated clay
Silica gel
Bone charcoal
Wood charcoal

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Mass Transfer
Molality is defined as the number of gm moles of solute per __________ of solvent.

m³
Litre
Kg
Gm

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